JP4493188B2 - Air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner, and more particularly to an indoor unit thereof.
[0002]
[Prior art]
In general, in an air conditioner, as shown in FIGS. 6 and 7, an indoor heat exchanger 2, a drain pan 3, an electrical assembly 4, an auxiliary pipe 5 for the indoor heat exchanger 2, etc. are provided in the indoor unit body 1. At the same time, a notch 6 is formed in the upper surface portion of the indoor unit body 1 so as to pass the auxiliary pipe 5 and the like, and a recess 7 is formed in the rear surface of the indoor unit body 1 as shown in FIG. The auxiliary pipe 5 and the like disposed in the recess 7 are pressed by a fixed angle 8 etc. screwed to the back of the indoor unit main body 1 and the joining piece 9a is attached to the notch 6 so as to cover the auxiliary pipe 5. Has been done. Further, a passage for passing the wiring 5b with the outdoor unit from the rear side of the rear plate to the front side is formed below the side surface of the indoor unit main body 1. The wiring 5b is connected from the back side of the rear plate to a terminal block provided on the front side through an opening provided in the lower portion of the rear plate. Although it is not particularly necessary to remove during normal wiring, a corner piece 9b is provided so that the corner portion of the indoor unit main body can be removed in order to facilitate wiring confirmation and wiring work. That is, the passage through which the wiring 5b passes is formed by the rear plate and the corner piece 9b.
[0003]
[Problems to be solved by the invention]
However, in such a structure, the joining piece 9a attached to the notch 6 of the indoor unit main body 1 and the parts of the corner piece 9b attached to the corner portion are necessary, and the number of parts increases. Further, the corner portion is most likely to hit during delivery or fall down the corner portion. At that time, a large impact is applied to the small corner piece 9b, and in particular, the rear plate of the indoor unit body 1 and the corner piece 9b. A strong force may be applied to the mounting part of this, and this part may be damaged.
[0004]
Furthermore, since the side of the indoor unit at the upper part of the corner piece 9b has a notch 6 between the central portion of the indoor unit main body 1, the connection with the central portion is weak in this portion, and a strong impact is applied to the side surface. When added, there was a possibility of breaking the notch 6 part.
[0005]
In addition, the corner piece 9b is provided with a detachable bushing 9c that serves as a pipe outlet when pipe connection is made to the right outside of the indoor unit. Most of them were cut off, and the corner pieces 9b were not easily attached to the indoor unit main body 1 and were likely to come off.
[0006]
In view of these points, an object of the present invention is to obtain an air conditioner in which the number of parts is reduced and the mechanical strength can be increased.
[0007]
[Means for Solving the Problems]
According to the first aspect of the present invention, a pipe or the like that connects the indoor heat exchanger and the outdoor heat exchanger is passed through one upper part of the rear plate of the housing in which the indoor heat exchanger and the indoor fan are arranged in the indoor unit. In the air conditioner arranged on the back surface of the rear plate,
The rear plate has its upper corner, side surface, and lower corner removed at one end thereof,
A notch is formed in one upper end of the rear plate of the upper corner portion,
Below this notch, a U-shaped pipe passage in which an auxiliary pipe extending from the indoor heat exchanger is arranged is molded integrally with the rear plate,
Each part of the upper corner, side surface, and lower corner of the rear plate is covered with a corner cover that is a U-shaped integrally molded part that forms the outer surface on the back side of the indoor unit,
The corner cover is detachably mounted with its upper portion and its lower portion engaged with the rear plate, and the upper portion is engaged on the main body side with respect to the piping passage of the rear plate. It is configured .
[0008]
The invention according to claim 2 is the invention according to claim 1, characterized in that the side surface portion of the corner cover has a double structure.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
FIG. 1 is a longitudinal sectional view of an indoor unit main body 10 of an air conditioner according to the present invention, and a front panel 12 that covers a part of the front surface and side surfaces is provided on the front surface of a housing 11 of the indoor unit main body 10. A front suction port 14a provided with a grill 13a is opened on the front side of the front panel 12, and an upper suction port 14b provided with a grill 13b is opened on the upper surface. In addition, a first indoor heat exchanger 15a that is curved so as to protrude forward is disposed in the housing 11 of the indoor unit main body 10, and the first indoor heat exchange is provided on the upper surface side. A second indoor heat exchanger 15b that is connected to the cooler 15a and is inclined downward toward the back side is disposed. A dehumidifying throttle valve 16 such as a two-way valve with a throttle is provided between the first indoor heat exchanger 15a and the second indoor heat exchanger 15b. Further, a third indoor heat exchanger 17 that functions as a condenser during the dehumidifying operation is provided above the second indoor heat exchanger 15b in a state substantially parallel to the second indoor heat exchanger 15b. . On the other hand, an indoor fan 18 comprising a cross-flow fan is disposed behind the first indoor heat exchanger 15a, and an air outlet 20 communicating with the ventilation path 19 is formed below the indoor fan 18. Yes.
[0011]
FIG. 2 is a diagram showing piping for connecting the heat exchangers. A heat transfer tube at one end of the third indoor heat exchanger 17 is connected to an expansion valve (not shown), and a heat transfer tube at the other end connects the conduit 21. To the heat exchanger tube at the top of the first indoor heat exchanger 15a. A three-way bend shunt 22 is connected to a predetermined heat transfer tube that is in direct communication with the heat transfer tube of the first indoor heat exchanger 15a to which the conduit 21 is connected. The ends of the two conduits 23a and 23b branched from the three-way bend shunt 22 are connected to the two heat transfer tubes in the middle portion of the first indoor heat exchanger 15a. The heat transfer tubes at the ends directly communicating with the heat transfer tubes to which the two conduits 23 a and 23 b are connected are joined by a branch pipe 24. The shunt pipe 24 is connected to a conduit 26 having one end connected to a shunt three-way bend 25 attached to the second indoor heat exchanger 15b. The dehumidifying throttle valve 16 is provided. On the other hand, the end portions of the two heat transfer tubes communicating with the diversion three-way bend 25 in the second indoor heat exchanger 15b are coupled by a merging pipe 28 and led out to the outside.
[0012]
Thus, the indoor air sucked from the front suction port 14a and the upper suction port 14b by the indoor fan 18 is heat-exchanged in the indoor heat exchangers 15a, 15b, and 17, and then passes through the ventilation path 19 from the blowout port 20. It is blown out indoors as conditioned air.
[0013]
The casing 11 of the indoor unit main body 10 is configured as a molded product in which the rear plate 30 and the drain pans 31 and 32 are integrally formed of a synthetic resin, and the drain pan 31 is disposed below the first indoor heat exchanger 15a. The drain pan 32 is disposed below the second indoor heat exchanger 15b. In the first indoor heat exchanger 15a, the second indoor heat exchanger 15b, and the third indoor heat exchanger 17, The generated drain is collected by the drain pans 31 and 32 and discharged outside the room.
[0014]
FIG. 3 is a perspective view of the front view of the housing 11 with the indoor heat exchangers 15a, 15b, and 17 removed. FIG. 4 is a perspective view of the indoor heat exchangers 15a, 15b, and 17 mounted thereon. FIG. 6 is a perspective view showing the state where the fan motor is removed, showing a state where the fan motor is removed. A fan motor housing portion 33 is integrally formed with the housing 11 and a synthetic resin at one end portion of the housing 11. The fan motor housing portion 33 has the same axis as the longitudinal axis of the indoor fan 18 and is formed in a cylindrical shape with the outer end opened, and the fan motor is inserted into the fan motor housing portion 33 in the axial direction. It is installed. A partition plate 34 that rises in the installation direction of the first and second indoor heat exchangers 15a and 15b and serves as a wall surface on the indoor fan side is provided on the side surface of the heat exchanger that is the inner side surface portion of the fan motor housing 33. A flange-like side wall 35 that is a second partition plate that rises is formed on the outer surface of the fan motor housing 33 on the side opposite to the heat exchanger. Between the partition plate 34 and the side wall 35, as shown in FIG. 4, a pipe 39 for connecting the heat exchangers and an auxiliary pipe 36 for connecting the indoor heat exchanger to the outdoor heat exchanger are disposed. ing.
[0015]
On the other hand, at one end of the rear plate 30 of the housing 11, as shown in FIGS. 4 and 8, the upper corner 50 , the side surface 51, and the lower corner 52 of the rear plate 30 are removed. Here, the side surface 51 being removed means that the side surface 51 is not extended to the outer surface of the indoor unit. A notch 37 is formed at one upper end of the rear plate 30 of the upper corner 50 portion, and a U-shaped piping passage 55 is formed below the notch 37. The U-shaped pipe passage 55 is composed of a base side wall 53 on the center side of the rear plate 30, a side wall 54 on the side surface, and a vertical wall 56 that connects both side walls. The auxiliary pipe 36 extended from the indoor heat exchanger is It extends to the back side of the rear plate through the notch 37, is bent 90 degrees downward at this notch part, reaches the lower part of the back side through the pipe passage, and is horizontally 90 in this direction toward the center of the rear plate 30 in the right direction. It is bent. The base side wall 53, the side wall 54, and the vertical wall 56 constituting the pipe passage 55 are all integrally formed with the rear plate 30 with synthetic resin.
[0016]
Usually, the auxiliary pipe 36 is connected to a pipe that has been extended from the outdoor unit at the lower center of the back surface of the rear plate 30. Although omitted in FIG. 4, a heat insulating material is wound around the auxiliary pipe 36 so that no condensation occurs after the notch 37. Therefore, the actual auxiliary pipe 36 has a considerable thickness and is tightly fitted into the U-shaped pipe passage 55 on the back surface of the rear plate 30.
[0017]
Further, the lower corner 52 at the lower end of the rear plate 30 is also cut out, and wiring with an outdoor unit (not shown) passes through this portion from the rear side to the front side, and is connected to the connector on the front side.
[0018]
Incidentally, as shown in FIG. 3, a corner cover 40 is detachably attached to the removed portion of the rear plate 30. As shown in FIG. FIG. 5 is a perspective view of the corner cover 40, which is formed in a U shape so as to cover the upper corner 50, the side surface 51, and the lower corner 52 of the rear plate 30. The corner cover 40 forms an outer surface on the back side of the indoor unit as shown in the side view of the indoor unit in FIG. 9, and the front panel 12 is attached from the front to the rear plate 30 to which the corner cover 40 is attached. The side surface portion 40a of the corner cover 40 has a double structure, and both the inner and outer wall portions are connected and reinforced by a plurality of ribs (not shown). Further, locking pieces 41 a and 41 b made of claws are respectively projected on the front end sides (portions facing the rear plate 30) of the upper corner portion 40 b and the lower corner portion 40 c, and the corner cover 40 is attached to the rear plate 30. When mounted, the claw, which is the upper locking piece 41a, engages with the engaged portion provided on the back inner surface of the base portion side of the upper notch 37 of the rear plate 30, and the lower locking piece 41b The corner cover 40 is fixed to the rear plate at these two locations by engaging with an engaged portion provided at a notch portion of the lower corner 52 of the rear plate 30.
[0019]
Further, a plurality of projections 58 are provided on the inner side surface of the side surface portion of the corner cover 40 so as to protrude toward the rear plate, and the projection 58 is used for positioning when the rear plate 30 is attached to the corner cover 40. The pipe passage 55 shown in FIG. 4 is loosely fitted into a hole 59 provided outside the side wall 54 on the side surface side.
[0020]
Thus, since the corner cover 40 is an integral part connected from the upper corner 50 to the side surface 51 and the lower corner 52, the corner cover 40 can be strengthened in strength, and the number of parts can be reduced and the strength can be improved at the same time. In addition, since the upper portion of the corner cover 40 is engaged on the main body side with respect to the pipe passage 55 of the rear plate 30, it can be firmly fixed as compared with fixing on the side surface side of the weak pipe passage 55, and the pipe A large force is applied to the passage 55, and it is possible to prevent a strong force from being applied to a thin connection portion between the rear plate and the main body.
[0021]
Further, since the pipe passage 55 is formed to have a minimum width through which the auxiliary pipe 36 wound with the heat insulating material can pass in order to reduce the size of the indoor unit, an attempt is made to expand this portion in the width direction by the elasticity of the heat insulating material. However, the corner cover 40 is pressed against the auxiliary pipe 36 because it is pushed by the base side wall 53 and the side wall 54 of the pipe passage 55 and is not pushed against the side face of the corner cover 40. It will not come off.
[0022]
3 and 9, reference numeral 42 denotes a bushing portion that can be cut out as necessary. The bushing 42 has a thin periphery and is integrally formed with the corner cover 40 and is easily cut out during installation work. When connecting the pipe to the outdoor unit at the right outside of the indoor unit, the bushing 42 is bent by 180 degrees on the right and the auxiliary pipe 36 housed on the left side when the indoor unit is viewed from the front and pulled out to the outside. Notched as opening.
[0023]
In the present embodiment, since the corner cover 40 and the rear plate 30 are engaged only at the upper part and the lower part, no strong force is applied in the vicinity of the bushing part 42 located on the side surface, and the bushing part 42 and the engaging part are not connected. Since they are separated from each other, the attachment of the corner cover 40 and the rear plate 30 is not weakened even if the bushing 42 is removed.
[0024]
【The invention's effect】
As described above, the present invention is an air in which piping or the like for connecting an indoor heat exchanger and an outdoor heat exchanger through one side upper part of a rear plate of an indoor unit in an air conditioner is arranged on the rear surface of the rear plate. In the harmony machine, the U-shaped corner cover that covers the side and lower corners from the upper corner of the rear plate through which the piping, drain pipe and wiring pass is detachably attached to the rear plate. The side and lower corners can be covered from the upper corner of the rear plate through which the pipe passes, the number of parts can be reduced, the attachment and detachment can be easily performed, and the strength of the entire casing can be increased. Furthermore, when the side part of the corner cover has a double structure, the strength can be further improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an indoor unit of an air conditioner according to the present invention.
FIG. 2 is a diagram showing a configuration of a pipe connecting each indoor heat exchanger.
FIG. 3 is a perspective view of the front view seen obliquely showing a state in which each indoor heat exchanger of the housing is removed.
FIG. 4 is a perspective view seen obliquely from above showing a state in which each indoor heat exchanger of the housing is placed, and showing a state in which the fan motor is removed.
FIG. 5 is a perspective view of a corner cover.
FIG. 6 is a perspective view showing a state in which a front panel of a conventional air conditioner is removed.
7 is a rear perspective view of the air conditioner shown in FIG. 6. FIG.
FIG. 8 is a front perspective view of a housing of the indoor unit.
FIG. 9 is a side view of the indoor unit of the air conditioner of the present invention.
[Explanation of symbols]
11 Housing 30 Rear plate 36 Auxiliary piping 40 Corner cover 40a Side surface 40b Upper corner 40c Lower corner 41a, 41b Locking piece

Claims (2)

Arranged on the back side of the rear plate through a pipe or the like connecting the indoor heat exchanger and the outdoor heat exchanger, on one side upper part of the rear plate of the housing where the indoor heat exchanger and the indoor fan are arranged in the indoor unit. In the air conditioner
In the rear plate, the upper corner, the side surface, and the lower corner are removed at one end of the rear plate,
A notch is formed in one upper end of the rear plate of the upper corner portion,
Below this notch, a U-shaped pipe passage in which an auxiliary pipe extending from the indoor heat exchanger is arranged is molded integrally with the rear plate,
Each part of the upper corner, side surface, and lower corner of the rear plate is covered with a corner cover that is a U-shaped integrally molded part that forms the outer surface on the back side of the indoor unit,
The corner cover is detachably mounted with its upper portion and its lower portion engaged with the rear plate, and the upper portion is engaged on the main body side with respect to the piping passage of the rear plate. an air conditioner characterized in that it is configured. The air conditioner according to claim 1, wherein the corner cover has a double side structure.

Images